415029 (2011 UL21)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6537389222 ± 3.55e-09
Semi-major axis (a)2.1223846854 AU ± 1.41e-09
Inclination (i)34.88596290° ± 1.62e-06
Long. of Asc. Node (Ω)275.31456377° ± 3.69e-07
Arg. of Perihelion (ω)284.98018604° ± 9.13e-07
Mean Anomaly (M)177.74570784° ± 2.01e-07
Mean Motion (n)0.3187690303°/day ± 3.18e-10
Perihelion dist (q)0.73489921 AU ± 7.55e-09
Aphelion dist (Q)3.50987016 AU ± 7.89e-09
Orbital Period3.09197629 yr ± 3.09e-09
Physical Parameters
H (abs. magnitude)15.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.218″
Uncertainty0
Orbit TypeApollo
MOID0.015855 AU
Observations Used3235
Radar Obs Used3
Oppositions24
Arc Total1989-2024
First Observation Used1989-10-29
Last Observation Used2024-09-28
Observations (4304)
Date Type RA Dec Mag Band Observatory
2018-07-09 23:52:30 C 22 02 03.55 +30 39 58.3 q 160
2018-07-12 23:39:35 C 21 56 31.60 +31 31 24.9 q 160
2018-07-12 23:43:37 C 21 56 31.27 +31 31 28.2 q 160
2018-07-12 23:47:39 C 21 56 30.95 +31 31 30.9 q 160
2018-07-16 04:28:31 C 21 50 15.55 +32 19 44.4 V W71
2018-07-16 04:35:02 C 21 50 14.99 +32 19 47.9 V W71
2018-07-16 04:38:20 C 21 50 14.67 +32 19 49.8 V W71
2018-07-18 23:36:38 C 21 44 31.87 +32 56 00.9 q 160
2018-07-18 23:40:39 C 21 44 31.48 +32 56 02.6 q 160
2018-07-19 05:06:56 C 21 44 03.17 +32 58 43.2 V W71
2018-07-19 05:17:42 C 21 44 02.19 +32 58 49.1 V W71
2018-07-19 05:31:05 C 21 44 01.06 +32 58 54.9 V W71
2018-07-19 05:34:28 C 21 44 00.73 +32 58 57.0 V W71
2018-07-19 23:03:47 C 21 42 29.16 +33 07 19.5 q 160
2018-07-19 23:07:52 C 21 42 28.78 +33 07 21.4 q 160
2018-07-19 23:11:58 C 21 42 28.41 +33 07 23.1 q 160
2018-07-20 04:19:26 C 21 42 01.45 +33 09 45.6 V W71
2018-07-20 04:22:33 C 21 42 01.23 +33 09 47.0 V W71
2018-07-20 04:25:27 C 21 42 00.93 +33 09 48.5 V W71
2018-07-31 23:24:37 C 21 16 23.16 +34 28 11.7 q 160
2018-07-31 23:28:27 C 21 16 22.74 +34 28 11.8 q 160
2018-07-31 23:32:21 C 21 16 22.39 +34 28 11.8 q 160
2018-08-03 23:12:06 C 21 09 54.85 +34 31 46.2 q 160
2018-08-03 23:16:10 C 21 09 54.48 +34 31 46.4 q 160
2018-08-03 23:20:14 C 21 09 54.03 +34 31 46.1 q 160
2018-08-05 22:16:40 C 21 05 44.77 +34 30 41.5 V K63
2018-08-05 22:22:02 C 21 05 44.22 +34 30 41.7 V K63
2018-08-05 22:27:41 C 21 05 43.79 +34 30 41.8 V K63
2018-08-05 22:45:30 C 21 05 42.18 +34 30 41.5 q 160
2018-08-05 22:47:41 C 21 05 41.91 +34 30 40.8 q 160
2018-08-05 22:51:30 C 21 05 41.67 +34 30 40.1 q 160
2018-08-07 01:56:47 C 21 03 20.03 +34 28 50.8 q W34
2018-08-07 01:59:21 C 21 03 19.88 +34 28 50.4 q W34
2018-08-07 02:12:57 C 21 03 18.76 +34 28 50.9 q W34
2018-08-11 11:25:12 C 20 54 26.15 +34 14 01.7 U T08
2018-08-11 11:49:54 C 20 54 24.11 +34 13 56.9 U T08
2018-08-11 11:53:16 C 20 54 23.75 +34 13 56.4 U T08
2018-08-11 12:15:00 C 20 54 22.00 +34 13 50.5 U T08
2018-08-12 22:24:02 C 20 51 37.30 +34 06 27.7 q 160
2018-08-12 22:27:57 C 20 51 36.97 +34 06 26.2 q 160
2018-08-12 22:32:04 C 20 51 36.60 +34 06 25.3 q 160
2020-09-05 11:09:23 C 05 54 39.79 +42 45 19.1 V G96
2020-09-05 11:15:31 C 05 54 40.26 +42 45 20.6 V G96
2020-09-05 11:21:42 C 05 54 40.72 +42 45 20.7 V G96
2020-09-05 11:27:52 C 05 54 41.09 +42 45 21.2 V G96
2020-09-27 11:08:19 C 06 25 46.74 +42 59 25.3 U I41
2020-09-27 11:45:43 C 06 25 48.64 +42 59 26.1 U I41
2020-09-28 10:43:18 C 06 27 00.94 +42 59 44.7 U I41
2020-09-28 12:12:48 C 06 27 05.54 +42 59 46.3 U I41
2020-09-28 12:42:07 C 06 27 07.03 +42 59 47.0 U I41
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-06-26 23:40:00 46095708 20 us 8560 -14 -14
2024-06-27 00:10:00 46009798 2 us 8560 -14 -14
2024-06-29 02:00:00 47980230.07 3 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)